Porzescharte

Overview

Porzescharte is a hors catégorie climb, the hardest rating there is, and the numbers explain why. Over 9.6 km the road lifts you from a start elevation of 965 m to a summit at 1895 m — a net gain of 930 m with 889 m of total ascent along the way. The headline figure is the average gradient of 9.69%, a number that rarely relents. There is no gentle valley approach hidden inside this climb; it is steep from the base and stays that way. For context, most riders will spend the better part of an hour grinding upward here, and the effort is unremitting rather than punctuated by recovery.

How the Gradient Unfolds

The defining characteristic of Porzescharte is consistency of difficulty. With a 9.69% average stretched across the full 9.6 km, the road offers almost no flat and almost no descent to break the rhythm. Where a lesser climb lets you soft-pedal and shake out your legs, this one keeps the pressure on. The max gradient of 20% marks the crux — roughly double the average — and it is here that momentum evaporates and cadence collapses. Because the average sits so high, even the "easier" sections still bite at gradients that would headline a lesser hill. Expect the steepest ramps to arrive as sustained walls rather than short kicks, and treat the near-20% pitches as the moments that will define your day.

Pacing Notes

On a climb this steep and this long, pacing discipline is everything. Anchor your effort to your FTP: on a sustained HC ascent you want to hold a wattage you can carry for the full duration, not a number that feels comfortable for the first two kilometres and buries you before the top. A useful rule is to ride the opening slopes slightly under threshold, banking energy for the 20% crux where power spikes are unavoidable. If you do not know your threshold yet, run the numbers through the FTP estimator before you commit to a target. Every premature match burned on the lower ramps is one you will desperately want back near the 1895 m summit.

Gearing

Gear for survival, not for pride. With a 9.69% average and pitches touching 20%, a compact crankset paired with a wide-range cassette is the sensible baseline. A 34×32 will get most fit riders up the shallower stretches, but it leaves little margin when the road rears toward 20% and your cadence falls off. For that reason, 34×34 is the smarter choice on Porzescharte — that extra sprocket buys you a lower, spinnable gear precisely where the climb is trying to stall you. If your frame and derailleur allow anything lower still, you will not regret it over 930 m of climbing.

Summary

Porzescharte is a relentless, uncompromising HC climb: 9.6 km of steep road with no meaningful respite, a 20% crux, and 930 m of vertical to swallow. Pace it with your threshold in mind, gear low, and respect the average.

Length: 9.6 km
Average gradient: 9.69%
Max gradient: 20%
Start: 965 m
Summit: 1895 m
Net gain: 930 m
Total ascent: 889 m
Category: HC